public static extern Haxe.HaxeInt GetMonthDays(Haxe.root.Date d);
public static extern Haxe.root.Date Delta(Haxe.root.Date d, double t);
private static extern Haxe.HaxeString __format(Haxe.root.Date d, string f);
public static extern Haxe.HaxeString Format(Haxe.root.Date d, string f);
protected virtual extern void WriteZipDate(Haxe.root.Date date);